Identify the group R in the following reactio | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The reaction of a Grignard reagent $(RMgBr)$ with an aldehyde $(R'CHO)$ followed by acid hydrolysis $(H_3O^+)$ yields a secondary alcohol.In the g

Vedclass · Accepted Answer

$CH_3-CH_2-$

Vedclass · Answer

(B) The reaction of a Grignard reagent $(RMgBr)$ with an aldehyde $(R'CHO)$ followed by acid hydrolysis $(H_3O^+)$ yields a secondary alcohol.In the given reaction,the starting material is propanal $(CH_3CH_2CHO)$ and the product is pentan$-3-$ol $(CH_3CH_2CH(OH)CH_2CH_3)$.The carbon skeleton of the product shows that an ethyl group $(CH_3CH_2-)$ has been added to the carbonyl carbon of the propanal.Therefore,the Grignard reagent used must be ethylmagnesium bromide $(CH_3CH_2MgBr)$,which implies that $R$ is the ethyl group,$CH_3CH_2-$.Thus,the correct option is $(B)$.

Identify the group $R$ in the following reaction:
$CH_3CH_2CHO \xrightarrow[2. H_3O^+]{1. RMgBr} CH_3CH_2CH(OH)CH_2CH_3$
$R$ is:

Similar Questions

Product $(B)$ is :

Identify the major product $A$ in the following reaction:
[Image of the reaction: $A$ substituted tetralin derivative with a ketone group,a chlorine atom,and a nitro group,reacting with $N_2H_4/KOH/H_2O$ (Wolff-Kishner reduction)]

Which of the following aldehydes gives a red precipitate with Fehling solution?

Find out the major product from the following reaction:

Which of the following reactions converts the carbonyl group of aldehydes and ketones to a methylene group on treatment with zinc amalgam and concentrated $HCl$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Identify the group $R$ in the following reaction:$CH_3CH_2CHO \xrightarrow[2. H_3O^+]{1. RMgBr} CH_3CH_2CH(OH)CH_2CH_3$$R$ is: